var createError = require('http-errors')
var express = require('express')
var path = require('path')
var cookieParser = require('cookie-parser')
var logger = require('morgan')
const session = require('express-session')
const redisStore = require('connect-redis')(session)

var indexRouter = require('./routes/index')
var usersRouter = require('./routes/users')

var app = express()

// view engine setup
app.set('views', path.join(__dirname, 'views'))
app.set('view engine', 'jade')

app.use(logger('dev'))
app.use(express.json())
app.use(express.urlencoded({ extended: false }))
app.use(cookieParser())
app.use(express.static(path.join(__dirname, 'public')))

const redisClient = require('./database/redis')
const sessionStore = new redisStore({
    client: redisClient
})
app.use(
    // 处理session
    session({
        secret: 'MDEZfH0^jT/$sv|S',
        resave: true, // 重新保存
        saveUninitialized: true,
        cookie: {
            path: '/', // default
            httpOnly: true, // default
            expires: 24 * 60 * 60 * 1000 // 过期时间
        },
        store: sessionStore
    })
)

app.use('/', indexRouter)
app.use('/users', usersRouter)

// catch 404 and forward to error handler
app.use(function (req, res, next) {
    next(createError(404))
})

// error handler
app.use(function (err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message
    res.locals.error = req.app.get('env') === 'development' ? err : {}

    // render the error page
    res.status(err.status || 500)
    res.render('error')
})

module.exports = app
